As usual, DRM means never knowing for sure and piracy continues to be the only way to guarantee you actually own something. Congratulations, Amazon; you have burned your customers on the finest altar available.

The fact that you can still find it elsewhere is meaningless, and you know that, too. That a merchant can roll back a transaction undertaken in good faith without the purchasers’s consent, arbitrarily and without the purchaser even being _informed beforehand_, is obviously and unambiguously Wrong, and your glib defense of it demeans you.